new material
Calcium fluoride circular window is a high-performance optical component known for its superior ultraviolet and infrared transmission, excellent chemical stability, and resistance to thermal fluctuations. Manufactured from high-purity CaF₂, it offers outstanding optical clarity, durability, and minimal optical distortion, making it an essential material for spectroscopy, infrared imaging, laser optics, and precision scientific instruments. Its ability to withstand harsh environments ensures reliable performance in advanced optical systems.
Product Overview
Calcium Fluoride circular windows are high-performance optical materials widely used in laser systems, ultraviolet (UV), visible, and infrared (IR) optical systems. Their main characteristics include high transmission, low dispersion, low fluorescence, and excellent transmittance in the ultraviolet, visible, and infrared wavelength ranges. Calcium fluoride offers outstanding resistance to mechanical and thermal shock, maintaining stable optical performance even in high-temperature environments. Through precise manufacturing processes such as glue disc polishing, high-speed polishing, ring polishing, and CNC polishing, calcium fluoride circular windows can achieve high precision and excellent surface quality to meet the demands of high-performance optical applications.
Key Features
- High Transmittance: Excellent optical transmission performance across ultraviolet, visible, and infrared wavelengths, enabling efficient light transmission across different spectral ranges.
- Low Dispersion and Low Fluorescence: Superior optical properties make it ideal for high-precision optical systems, reducing optical distortion.
- Resistance to Mechanical and Thermal Shock: High hardness and impact resistance, making it suitable for use in high-temperature environments.
- High Precision Manufacturing: Various polishing techniques ensure each window has excellent surface quality and high precision.
Applications
- Laser Systems: Widely used in lasers, laser scanning, and laser detection systems, providing efficient light transmission.
- Infrared and Ultraviolet Optics: Serves as an important optical window in infrared imaging, UV optical detection, and sensor systems.
- High-Energy Detectors: Used in high-energy detectors and imaging systems, especially in applications requiring high transmittance and high hardness.
- Optical Components: Can be used as high-performance lens or window material, with applications in research, military, aerospace, and other fields.
| Optical Properties | Value |
| Transmission Range | 0.13-10μm |
| Transmittance | >94%@193nm-7.87μm |
| Refractive Index | 1.4288@2.5μm |
| 1.39908@5μm | |
| Reflection Loss | 5.4%@5μm (both surfaces) |
| Absorption Coefficient | 7.8×10<sup>-4</sup>@2.7μm |
| Structure | Cubic Crystal System |
| Cleavage Planes | <111> |
| Physical Properties | Value |
| Density | 3.18 g/cm<sup>3</sup> |
| Melting Point | 1420 ℃ |
| Thermal Conductivity | 9.71 W/(m×K) @ 293K |
| Thermal Expansion | 18.5 × 10<sup>-6</sup>/K @ 273K |
| Knoop Hardness | 158.3 kg/mm<sup>2</sup> |
| Specific Heat | 854 J/(kg×K) |
| Dielectric Constant | 6.76 @ 1 MHz |
| Young's Modulus | 75.8 GPa |
| Shear Modulus | 33.77 GPa |
| Bulk Modulus | 82.71 GPa |
| Poisson's Ratio | 0.26 |
| Chemical Properties | Value |
| Solubility | 0.016 g/L @ 20℃ |
| Molecular Weight | 78.0748 g/mol |
| Parameter | Range |
| Diameter Range | 2-300 mm |
| Thickness | 0.12-60 mm |
| Surface Finish | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Accuracy | λ/2, λ/4, λ/8, λ/10 |
| Parallelism | <3' - 30" |
| Aperture Transmission | >90% |
| Coating | Customizable |
